CINCINNATI — A two-day delay because of a stiff neck didn’t hinder Jordan Zimmermann at all in his continued rehab from Tommy John surgery.

Zimmermann tossed four scoreless innings tonight for Class A Potomac, allowing two hits, striking out four and walking zero. The right-hander now hasn’t given up an earned run or issued a walk in 13 innings spanning four rehab starts.

Tonight’s gem came two days after Zimmermann was scratched from his originally scheduled outing because of a stiff neck. He insisted he could pitch that night, but team officials didn’t want to take a chance, so they pushed him back.